Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quem foi o oponente na competição da Football League Trophy?
 ###Tabelas: CREATE TABLE professional_league_1951–present (professional_league_1951–present_id AUTO_INCREMENT PRIMARY KEY, Season INT, Champion VARCHAR, Count INT, Runners-up VARCHAR, Third place VARCHAR, Top scorer VARCHAR, Top scorers club VARCHAR, Goals VARCHAR) CREATE TABLE penalty_shootouts (penalty_shootouts_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Competition VARCHAR, Opponents VARCHAR, Venue VARCHAR, Score VARCHAR) CREATE TABLE european_records (european_records_id AUTO_INCREMENT PRIMARY KEY, Competition VARCHAR, Appearances INT, Played INT, Drawn INT, Lost INT, Goals for INT, Goals against INT) CREATE TABLE list_of_urban_settlements_in_vojvodina (list_of_urban_settlements_in_vojvodina_id AUTO_INCREMENT PRIMARY KEY, Urban settlement VARCHAR, Cyrillic Name VARCHAR, City / municipality VARCHAR, District VARCHAR, Population (1991) INT, Population (2002) INT, Population (2011) INT) CREATE TABLE prize_money (prize_money_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Winner VARCHAR, Runner-Up VARCHAR, Semi-Finalists VARCHAR, Quarter-Finalists VARCHAR, Last 16 VARCHAR, Last 32 VARCHAR, Last 64 VARCHAR, Total VARCHAR)  
SELECT Opponents FROM penalty_shootouts WHERE Competition = football league trophy